Influence of Helium on the Conversion of Methane and Carbon dioxide in a Dielectric Barrier Discharge
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- Pinhão, N.R., Janeco, A. & Branco, J.B. Plasma Chem Plasma Process (2011) 31: 427. doi:10.1007/s11090-011-9294-3
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We have studied the production of synthesis gas and other hydrocarbons in a dielectric barrier discharge using mixtures of helium, methane and carbon dioxide. It was found that helium has a significant influence on the discharge, decreasing the breakdown voltage and increasing the rate of conversion of CH4 and CO2. However it also decreases the selectivities and the range of stable operating conditions for the discharge. The main products obtained were H2, CO, C2H6 and C3H8 but traces of other hydrocarbon, carbon deposition and the formation of condensable products were also detected. The rate of conversion and conversion abilities were obtained by fitting the conversion results to a model.